Nut-lock.



B.. 'COOPERH NUT LooK. PPPPPPPPPPPPPPPPPPPPPPPPPP o.

975,605. Patented Nov.15,1910.

INVENTOR I ROIBERT"COOPER,I OF HICAGO, ILLINOIS.

HUT-LOOK.

maoosf.

Specification of Letters Patent. Patten'ted NOV..l 15, 1919. I

Application filed "September i', 1910. Serial No 580,875.

To all whom 'it mag/concern:

Be it known that I, ROBERT Coornn, a sub-' ject of the King of England, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in N ut-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others Skilled in the art to Which it appertains to make and use the same, reference being had, to the accoinpanying drawings, and to the letters and figures of reference' marked thereon, which form a part of this specifi'cation.

This invention relates tonewl and useful improvements in nut andgabolt looks and comprises a simple 'and eflicient device of this nature consisting of a slotted bolt with a resilient member passing through the slot of the bolt and adapted to engage ratchet teeth upon'a nut.

The invention comprises various details of construction and combinations and .arrangements of parts which will be' hereinafter fully described and then specifically defined in the appended claim.

I illustrate my invention in the accompanying drawings, in Which Figure 1 is a perspective view of the device showing the nut and bolt looked together. Fig. 2 is a longitudinal sectional view, and Fig. 3 is a detailed view of the resilient llooking member.

Reference now being had to the details of the drawings by letter, A designates a bolthaving a longitudinal slot B therein and is threaded in theusual manner. A nut D is interiorly threaded and fits the boltand hasa series of ratchet teeth E upon its outer face. 4A resilient member or sprin'g, designated by letter F a detail of which 1s shown in the drawings, has one end H bent at a'n angle and is adapted to engage over the marginal edge of the slot, as shown in the sectional view of the drawings, while another portion H' is bowed and engages the edge of the opposite slit, While the shank hooke portion of the sprin is diagonally disposed and has a flat end Hg; adapted to engage one 'op another of the ratohet teeth. The inner end of the spring. is preferably enlarged, as shown at J.

In applying the device, the nutis screwed on until the ratchet is several threads below the end of the slot FV in the bolt, after which the spring is contracted' so that the nortion havin an angled end is contracted and the end engaged overthe slot. After- Ward, .by pressing down up'on the bowed portion, the device may be pushed in place and the spring, when it contracts,`as`suming the position shown in the drawings. The

'marginal edge of the spring ergaging 'the ratchet teeth will serve to hol the same from loosening. When it is desired to move the-Ingat, the spring may be held out of the path ``of lthe ratchet teeth and theinut allowed"l to turn. V q

While I have shown my device as made of a flat spring material, it will beunderstood that wire may be used equally as well.

' By having the end of the spring widened or tapering' as shown, means is provided for preventing the spring from pulling through the' slot in the bolt.

What I claim to be new is A nut lock oomprising a bolt having a longitudinal slot therein, a nut mounted upon the threaded bolt and having ratchet teethin the face thereof, a spring having one end bent at an angle engagmg over one marginal edge of the slot and bent to form a bowed portionengaging the other marginal edge' of the slot, a portion of the sprin extending diagonally through the slot an bent upon itself forming a flat portion engaging the ratchet teeth.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

' ROBERT COOPER.

WitneSses:`

HENRY J. HENN, G. H. KNoPP. 

